Patents Assigned to Levant Power Corporation
  • Publication number: 20170136842
    Abstract: In one embodiment, one or more suspension systems of a vehicle may be used to mitigate motion sickness by limiting motion in one or more frequency ranges. In another embodiment, an active suspension may be integrated with an autonomous vehicle architecture. In yet another embodiment, the active suspension system of a vehicle may be used to induce motion in a vehicle. The vehicle may be used as a testbed for technical investigations and/or as a platform to enhance the enjoyment of video and/or audio by vehicle occupants. In some embodiments, the active suspensions system may be used to perform gestures as a means of communication with persons inside or outside the vehicle. In some embodiments, the active suspensions system may be used to generate haptic warnings to a vehicle operator or other persons in response to certain road situations.
    Type: Application
    Filed: June 3, 2016
    Publication date: May 18, 2017
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi, Jack A. Ekchian, Olivia D. Godwin, Clive Tucker, John A. Laplante, William Graves, Shakeel Avadhany, Michael W. Finnegan
  • Publication number: 20170137023
    Abstract: In some embodiments, a rapid-response active suspension system controls suspension force and position for improving vehicle safety and drivability. The system may interface with various sensors that detect safety critical vehicle states and adjust the suspension of each wheel to improve safety. Pre-crash and collision sensors may notify the active suspension controller of a collision and the stance may be adjusted to improve occupant safety during an impact while maintaining active control of the wheels. Wheel forces may also be controlled to improve the effectiveness of vehicle safety systems such as ABS and ESP in order to improve traction. Also, bi-directional information may be communicated between the active suspension system and other vehicle safety systems such that each system may respond to information provided to the other.
    Type: Application
    Filed: April 1, 2015
    Publication date: May 18, 2017
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi, Clive Tucker, Jack A. Ekchian
  • Patent number: 9550404
    Abstract: Various embodiments related to hydraulic actuators and active suspension systems as well as their methods of use are described.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: January 24, 2017
    Assignee: Levant Power Corporation
    Inventors: Marco Giovanardi, Clive Tucker, Ross J. Wendell, Zackary Martin Anderson, Colin Patrick O'Shea, Vladimir Gorelik, Tyson David Sawyer, Jonathan R. Leehey, Johannes Schneider, Robert Driscoll, Patrick W. Neil, Shakeel Avadhany
  • Patent number: 9440507
    Abstract: A method for reducing power consumption in an active suspension system through the selective use of high performance, associated with high power demand, only in situations instantaneously deemed to provide a high ratio of benefit to cost. Input events are classified ahead of time, and are identified during operation of the system, ahead of time if possible through the use of look-ahead sensing or statistical analysis, or at the beginning of the event through the use of motion sensing. Once an event is detected, an estimation of the cost and benefits for an intervention of the active suspension system is made, and the intervention is scaled in a way to provide a good compromise. Relying on the nonlinearity of the cost and benefit expressions, this leads to overall reduced power consumption with small loss in perceived benefit.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: September 13, 2016
    Assignee: Levant Power Corporation
    Inventors: Marco Giovanardi, Jonathan R. Leehey, Johannes Schneider, Zackary Martin Anderson
  • Publication number: 20160114643
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric enemy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Publication number: 20160097406
    Abstract: Hydraulic bump stops and bi-directional diverter valves may be used to protect hydraulic systems, including, for example in one embodiment, the hydraulic actuators of an active suspension system, from damage due to operation outside the normal operating range of the system. In some embodiments, a hydraulic bump stop may be used to slow down the motion of a piston at the extremes of the compression and/or extension strokes of an actuator. In another embodiment, a diverter valve may be used to protect a hydraulic motor/pump in a hydraulic system from an over-speed condition. When the piston in an active suspension system actuator moves at a speed in excess of a threshold value, one or more diverter valves may be used to divert flow away from the hydraulic motor/pump. In some embodiments, a diverter valve may be a dual or single spool bi-directional diverter valve.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 7, 2016
    Applicant: Levant Power Corporation
    Inventors: Richard Anthony Zuckerman, Clive Tucker, Colin Patrick O'Shea, Jack A. Ekchian
  • Publication number: 20160075205
    Abstract: A method of on-demand energy delivery to an active suspension system is disclosed. The suspension system includes an actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller. The method includes disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 17, 2016
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi, Clive Tucker, Jonathan R. Leehey, Colin Patrick O'Shea, Johannes Schneider, Vladimir Gorelik, Richard Anthony Zuckerman, Patrick W. Neil, Tyson David Sawyer, Ross J. Wendell
  • Publication number: 20160059664
    Abstract: An active suspension system is configured in a strut arrangement. The active suspension system comprises a hydraulic actuator and a hydraulic pump/electric motor assembly, wherein the actuator movement is preferably in lockstep with the hydraulic motor-pump and electric motor-generator combination. Torque in the electric motor is instantaneously controlled by a controller to create an immediate force change on the hydraulic actuator. The hydraulic actuator is configured so that it can be used as a strut whereby the actuator has sufficient structural rigidity to carry the applied suspension loads while capable of supplying damper forces in at least three quadrants of the force velocity graph of the suspension actuator operation. Embodiments disclosed include low cost active suspension systems for a MacPherson strut application.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 3, 2016
    Applicant: Levant Power Corporation
    Inventors: Clive Tucker, Zackary Martin Anderson, David Michael Lewis, Ross J. Wendell, Alexander Apstolos Alexandridis
  • Patent number: 9260011
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric energy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: February 16, 2016
    Assignee: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Patent number: 9174508
    Abstract: A method of on-demand energy delivery to an active suspension system is disclosed. The suspension system includes an actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller. The method includes disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: November 3, 2015
    Assignee: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi, Clive Tucker, Jonathan R. Leehey, Colin Patrick O'Shea, Johannes Schneider, Vladimir Gorelik, Richard Anthony Zuckerman, Patrick W. Neil, Tyson David Sawyer, Ross J. Wendell
  • Publication number: 20150224845
    Abstract: A method of on-demand energy delivery to an active suspension system comprising an actuator body, hydraulic pump, electric motor, plurality of sensors, energy storage facility, and controller is provided. The method comprises disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.
    Type: Application
    Filed: January 22, 2015
    Publication date: August 13, 2015
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Shakeel Avadhany, Matthew D. Cole, Robert Driscoll, John Giarratana, Marco Giovanardi, Vladimir Gorelik, Jonathan R. Leehey, William G. Near, Patrick W. Neil, Colin Patrick O'Shea, Tyson David Sawyer, Johannes Schneider, Clive Tucker, Ross J. Wendell, Richard Anthony Zukerman
  • Patent number: 9035477
    Abstract: A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: May 19, 2015
    Assignee: Levant Power Corporation
    Inventors: Clive Tucker, Ross Wendell, Zackary M. Anderson, Evan Moen, Johannes Schneider, Zachary J. Jackowski, Sean Morton
  • Publication number: 20140346783
    Abstract: A regenerative shock absorber that include a housing and a piston that moves at least partially through the housing when the shock is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor, in turn, drives an electric generator that produced electric energy. The electric energy may be provided to a vehicle, among other things. The regenerative shock absorber may also provide ride performance that comparable to or exceeds that of conventional shock absorbers.
    Type: Application
    Filed: August 13, 2014
    Publication date: November 27, 2014
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Zachary J. Jackowski, Ryan Bavetta
  • Publication number: 20140294625
    Abstract: A method and system for measuring rotor position or velocity in an electric motor disposed in hydraulic fluid. The system comprises a contactless position sensor that measures electric motor rotor via magnetic, optical, or other means through a diaphragm that is permeable to the sensing means but impervious to the hydraulic fluid. An electronic sensor is positioned outside the operating fluid, whereas the motor is located in the fluid volume.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Clive Tucker, Vladimir Gorelik, Jonathan R. Leehey, Robert Driscoll, Colin Patrick O'Shea, Johannes Schneider, Ross J. Wendell, Tyson David Sawyer
  • Publication number: 20140297113
    Abstract: An active suspension system for a truck cabin that actively responds to and mitigates external force inputs between the truck chassis and the cabin. The system greatly reduces pitch, roll, and heave motions that lead to operator discomfort. The assembly is comprised of two or more self-contained actuators that respond to commands from an electronic controller. The controller commands the actuators based on feedback from one or more sensors on the cabin and/or chassis.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Richard Anthony Zuckerman, Clive Tucker, Johannes Schneider, John Giarratana
  • Publication number: 20140297117
    Abstract: A distributed active suspension control system is provided. The control system is based on a distributed, processor-based controller that is coupled to an electronic suspension actuator. The controller processes sensor data at the distributed node, making processing decisions for the wheel actuator it is associated with. Concurrently, multiple distributed controllers on a common network communicate such that vehicle-level control (such as roll mitigation) may be achieved. Local processing at the distributed controller has the advantage of reducing latency and response time to localized sensing and events, while also reducing the processing load and cost requirements of a central node. The topology of the distributed active suspension controller contained herein has been designed to respond to fault modes with fault-safe mechanisms that prevent node-level failure from propagating to system-level fault. Systems, algorithms, and methods for accomplishing this distributed and fault-safe processing are disclosed.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: William G. Near, Vladimir Gorelik, Jonathan R. Leehey, Marco Giovanardi, Matthew D. Cole
  • Publication number: 20140294601
    Abstract: Hydraulic pumps/motors are used to convert between rotational motion/power and fluid motion/power. Pressure differential is achieved across the pump/motor by applying torque to either aid or impede rotation which generally results in either a pressure rise or pressure drop respectively across the unit. This torque is often supplied by an electric motor/generator. Especially in positive displacement pumps/motors this pressure differential is not a smooth value but rather it contains high frequency fluctuations known as pressure ripple that are largely undesirable. With thorough analysis it can be discovered that these fluctuations occur in a predictable manner with respect to the position (angular or linear) of the pump/motor. Using a model that contains this information, a feed-forward method of high-frequency motor torque control is implemented directly on the hydraulic pump/motor by adding to the nominal torque, a model-based torque signal that is linked to rotor position.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Colin Patrick O'Shea, Tyson David Sawyer, Marco Giovanardi
  • Publication number: 20140297116
    Abstract: A self-driving vehicle with an integrated fully-active suspension system. The fully-active suspension utilizes data from one or more sensors used for autonomous driving (e.g. vision, LIDAR, GPS) in order to anticipate road conditions in advance. The system builds a topographical map of the road surface. Suspension and road data is delivered back to the vehicle in order to change autonomous driving behavior including route planning. Energy storage is regulated based on a planned route. Forward and lateral acceleration feel is mitigated through active pitch and tilt compensation. The fully-active suspension pushes and pulls the suspension in three or more operational quadrants in order to deliver superior ride comfort, handling, and/safety of the vehicle.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi
  • Publication number: 20140297119
    Abstract: A method for reducing power consumption in an active suspension system through the selective use of high performance, associated with high power demand, only in situations instantaneously deemed to provide a high ratio of benefit to cost. Input events are classified ahead of time, and are identified during operation of the system, ahead of time if possible through the use of look-ahead sensing or statistical analysis, or at the beginning of the event through the use of motion sensing. Once an event is detected, an estimation of the cost and benefits for an intervention of the active suspension system is made, and the intervention is scaled in a way to provide a good compromise. Relying on the nonlinearity of the cost and benefit expressions, this leads to overall reduced power consumption with small loss in perceived benefit.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Marco Giovanardi, Jonathan R. Leehey, Johannes Schneider, Zackary Martin Anderson
  • Publication number: 20140288776
    Abstract: A method of on-demand energy delivery to an active suspension system is disclosed. The suspension system includes an actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller. The method includes disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 25, 2014
    Applicant: Levant Power Corporation
    Inventors: Zackary Martin Anderson, Marco Giovanardi, Clive Tucker, Jonathan R. Leehey, Colin Patrick O'Shea, Johannes Schneider, Vladimir Gorelik, Tyson David Sawyer, Ross J. Wendell